%*****Block1 STIM SETUP****

% the number of trials of each stim pairing
B1trials_perType = 2;

% build the B1 trial list
AB_trials = repmat([ A,B ], B1trials_perType, 1);
BA_trials = repmat([ B,A ], B1trials_perType, 1);

% bind all the trial types to define the block's trials
B1_trialList = [AB_trials; BA_trials;];

% read in the images and create the required textures:  {A,B}
B1_images = [];
B1_images{1} = imread('./images/1.bmp');
B1_images{2} = imread('./images/2.bmp');

% load all the textures
B1_textures = [];
for B1Texture_index = 1 : size(B1_images, 2) % Number of stims
    B1_textures{B1Texture_index}= Screen('MakeTexture', wPtr, B1_images{B1Texture_index});
end

% load the textures into an array mapping onto corresponding choice ids
textures = [];
textures(A) = B1_textures{1}; % {A,B}
textures(B) = B1_textures{2};

%****BEGIN B1_test*****

B1Complete = false;
numB1Blocks = 1; %*******Determines # of Blocks*******
B1block_index = 0;
no_response = false;

% loop through the B1 phase
while ~B1Complete
    
    % track trial ids
    trial_ids = [];
    % track trial type
    trial_stimuli = [];
    %track response
    trial_response = [];
    % track which stim was choosen
    trial_selectedStim = [];
    % track the rt
    trial_RT = [];
    % track the accuracy
    trial_accuracy = [];
    
    % increment the block index
    B1block_index = B1block_index + 1;
    
    % random_index = randperm(size(B1_trialList, 1));
    randomized_trialList = B1_trialList([1,3,2,4],:);  %(random_index,:);
    
    trial_index = 1;
    while trial_index <= size(randomized_trialList, 1)
        
        % Fixation
        fixation_text = '+';
        Screen('TextFont',wPtr,'Times');
        Screen('TextStyle',wPtr,0);
        Screen('TextColor',wPtr,[255 255 255]);
        Screen('TextSize',wPtr,80);
        DrawFormattedText(wPtr,fixation_text,'center','center');
        Screen(wPtr, 'Flip');
        % show the fixation for 1 sec
        WaitSecs(1);
        
        % get the current trial's info
        L = randomized_trialList(trial_index, 1);
        R = randomized_trialList(trial_index, 2);
        
        % NetStation('Event',trial_pair,EventTime+offset - (1.81e-05)*(EventTime -
        % Synchtime)););
        
        % define the correct choice
        if  L==1 || L==3 % A or C
            correct_choice = left_button;
            % correct_choice = up_key;
        elseif L==2 || L==4 % B or D
            correct_choice = right_button;
            % correct_choice = down_key;
        end
        
        %rect=[left_rect_test',right_rect_test'];
        %rect=[down_rect',up_rect']; % For some reason need to be reversed
        
        % now draw the stim
        Screen('DrawTexture', wPtr, textures(L), [], left_rect_test);
        Screen('DrawTexture', wPtr, textures(R), [], right_rect_test);
        Screen(wPtr, 'Flip');
        
        % start the trial timer;
        startTime = GetSecs();
        
        wait_stamp=GetSecs;
        % display "tmp"
        while 1
%            [a ab] = JoyMEX(0);
            [ keyIsDown, seconds, keyCode ] = KbCheck(GPindx);
            if keyIsDown
                if keyCode(left_button) &&  left_button==correct_choice
                    subject_choice = left_button;
                    no_response = false;
                    trlResponse = 1;
                    trlAccuracy = 1;
                    break;
                elseif keyCode(right_button) &&  right_button==correct_choice
                    subject_choice = right_button;
                    no_response = false;
                    trlResponse = 1;
                    trlAccuracy = 1;
                    break;
                elseif keyCode(left_button) &&  left_button~=correct_choice % supoptimal
                    subject_choice = left_button;
                    no_response = false;
                    trlResponse = 1;
                    trlAccuracy = 0;
                    break;
                elseif keyCode(right_button) &&  right_button~=correct_choice % supoptimal
                    subject_choice = right_button;
                    no_response = false;
                    trlResponse = 1;
                    trlAccuracy = 0;
                    break;
                end
            elseif(GetSecs-wait_stamp) > TSTDEADLINE,
                subject_choice = 9999;
                no_response = true;
                trlResponse = -1;
                trlAccuracy = -1;
                break;
            end
        end
        
        % stop the trial timer
        RT = GetSecs() - startTime;
        
        % determine if they selected the right or left stim
        if subject_choice == correct_choice
            trlselectedStim = 1;
        else
            trlselectedStim = 0;
        end
        
        % determine the reward feedback
        Screen('TextSize',wPtr,70);
        Screen('TextFont',wPtr,'Times');
        Screen('TextStyle',wPtr,1);
        
        % Store the trial data
        %
        % update the trial number list
        trial_ids = [trial_ids; trial_index];
        % store the trial stimuli
        trial_stimuli = [trial_stimuli; randomized_trialList(trial_index,:)];
        %store response
        trial_response = [trial_response; trlResponse];
        % store the RT
        trial_RT = [trial_RT; RT];
        % store the subject's choice
        trial_selectedStim = [trial_selectedStim; trlselectedStim];
        % store accuracy independent of feedback
        trial_accuracy = [trial_accuracy; trlAccuracy];
        
        % increment the trial index
        trial_index = trial_index + 1;
        
    end
    
    % check to see if B1 is done
    if B1block_index >= numB1Blocks
        B1Complete = true;
    end
end


% *****END OF B1_test*****